Dandadan S2 E9 - A Matter of Leverage

At the start of the discussion. Your instincts of that line being a reference are actually spot on. The line that character says is a direct reference to a line Char says in the original Gundam. During his fight with Amuro at the end of the series. The song the character is singing at the start of that scene is also from Gundam, its “Here comes Char”. I hope you’ll enjoy the many references to come as well!